How hot or cold something is.
temperature
A tool used to measure temperature.
thermometer
A spinning column of air that touches the ground and can cause damage.
tornado
Day to day conditions of the atmosphere
Weather (or weather conditions)
When water turns into a gas (water vapor) and rises into the air because of heat.
evaporation
Air that moves from one place to another.
wind
A tool used to measure air pressure.
barometer
Huge storm with strong winds and lots of rain that form over warm ocean water.
hurricane
Balloons sent high into the air to measure weather conditions like temperature, wind, and air pressure.
weather balloons
When water vapor cools down and turns back into tiny drops of liquid, forming clouds.
condensation
Groups of tiny water droplets or ice crystals in the sky.
clouds
A tool used to measure how much rain has fallen.
rain gauge
When warm air moves in and pushes cold air out, often bringing light rain or clouds.
warm front
A prediction of what the weather will be like in the future.
forecast
When water comes out of plants and evaporates into the air.
transpiration
Water that falls from the sky in different forms, like rain, snow, sleet, or hail.
precipitation
A tool used to show which direction the wind is coming from.
wind vane
When cold air pushes in and takes over warm air, often bringing storms or cooler weather.
cold front
A tool that uses radio waves to find storms and see where they are moving.
radar
The movement of water in the ocean, like a river in the sea.
current
The weight of the air pressing down on Earth.
air pressure
A tool used to measure wind speed.
anemometer
A large area of air that has the same temperature and moisture throughout.
air mass
Pictures of Earth taken from space that show weather, like clouds or storms.
satellite maps
A warm ocean current that flows from the Gulf of Mexico across the Atlantic Ocean and affects weather and climate.
gulf stream